Humanity’s attempt to terraform and colonize Mars goes horribly wrong.

In the late 26th century, overpopulation on Earth is reaching the breaking point, and humanity must find new frontiers. The terraforming of Mars has taken centuries but is now complete. The colonization of Mars by humanity is an epoch-making event, but an unintended side effect of the terraforming process unleashes a horror no one could ever have imagined…

Beaten by Akari, Shokichi is free from his visions of the past. But suddenly the laboratory the battle took place in self-destructs! Akari is struggling vainly to carry the fallen Hiruma and Shokichi to safety when someone surprising appears. Meanwhile, Hannibal and Samurai Sword confront each other inside a luxury cruise ship, in a battle that will reveal past tragedy and a deadly grudge.